Atomizer or spraying device.



E. H. PEABODY. ATOMIZEB. ORSPRAYING DEVICE. APPLICATION FILED MAY 20, 1909.

Patented Nov. 7, 1911-.

10 m nulm WIT NE 8858- A TTOfM/E Y UNITED STATES PATENT OFFICE.

ERNEST H. PEABOIDY, OF NEW YORK, N. Y., AssIGNon To THE BABCOCK & wILcoX COMPANY, OF BAYONNE, NEW JERSEY, A CORPORATION E NEW JERSEY.

- ATOMIZER OR SPRAYING DEVICE.

Specification of Letters Patent.

Application filed May 20, 1909. Serial No. 497,282.

a citizen of the United States, and a resident of the city of New York, borough of 'Manhattan, county and State of New York,have invented a new and useful Improvement in Atomizers or Spraying Devices, of which the following is a description, reference being made to the accompanying drawings, which are a part of this specification.

This invention relates particularly to improvements in atomizers used for spraying uel oil, whereby the oil is atomized and injected into the combustion chamber of a furnace, in the form of spray, bymeans of mechanical action induced by pressure.

One of the features of the invention is a novel arrangement of a detachable washer of simple construction,.which embodies the means'of imparting whirling motion to the issuing liquid.

In this class of atomizer, wherein the liquid is sprayed by means of centrifugal force,

it is desirable to provide a ready means for controlling and altering the direction of rotation of the issuing liquid, and for controlling and altering the size and form of the passages by means of which the liquid is given a whirling motion. Thus, a small amount of heavy liquid would require a diiferent arrangement'a'nd' size of passages than would give the best results with a light liquid, or a greater or less quantity of either light or heavy liquid. Thus, an atomizer in which the aforesaid passages are contained in a detachable part, of cheap and simple 'constructlon, provides a means for quickly mak ng the required changes, and possesses a distinct advantage over those atomizer-s which are not susceptible to flexibility of construction. Furthermore, the detachable construction provides a ready means for cleaning the atomizer shouldthe same become cloggedwith particles of dirt carried in suspension in the liquid. It further an easy and cheap construction to manufacture.

The invention will be understood by ref ,erence to the accompanying drawings in which Figure 1 1s a side view of the complete burner or atomlzer, shown partly in section.

"Fig. 2 is an end view of same. Fig. 3 is an end View withthe tip removed, showing the -Washer in position. Fig. 4: is an endview showing the device with the washer removed. Fig. 5 is a view of the tip, showing the washer in position, as seen from the inside. Fig. 6 is a sectional view of the washer. Figs. 7 8 and'9 are plan views of the washer showing various modifications of the same.

Like numerals refer to like parts in the several views. 1

Patented Nov. '7, 1911i Referring to the drawings, the numeral 1 designates an oil supply pipe secured to the body 2 of a needle valve 3. Also secured to said valve is a pipe 4. into which the oil is delivered through the valve. The other end of pipe 4 is threaded to screw into a nozzle 5 properly threaded to receive the same. The nozzle 5 is provided with longitudinal passages 7 communicating with the pipe 4;

and leading to an annular channel 8 formed in the face surface of the end of the nozzle about a central core 9. Seated upon the end of nozzle 5 is a washer 10 having a central opening 11 of slightly less diameter than the core 9, and one or more channels 12 leading tangentially into the opening 11. The outer ends of said channels open over the annular channel 8, as shown in Fig. 3, and conduct the oil therefrom to the central opening 11. The outer end of the nozzle is exteriorly threaded to receive a tip 13 having a small discharge orifice 14 communicating with a conical chamber 15 the base of which is substantially of the same diameter that of the opening 11. When the parts are assembled the washerlOf-is firmly clamped by the tip to its seatover the end of the'nozzle 5.

The washer 10 may be provided with one or more tangential channels. In Figs. 3 and 7 two such channelsarc shown. In Figs. 8 and 9 four are shown, in the latter form the outer ends of the channels being widened.

From the foregoing description the operation will be readily understood. The oil enters the pipe l through the needle valve and passes through the openings 7 in the plug 6 to the annular channel 8. Thence it passes through the tangential channels 12 to the central opening 11 of the washer and conical chamber 15 of the tip.

In atomizer-s of the type wherein the spraying 'is accomplished by means of centrifugal force imparted to the liquid within I the tip of the atomizer, it is essential that the maxnnum whirling effect he imparted to the liquid, and that this whirling eifect'be I reduced as little as possible through friction or other causes, until the liquid issues :t'rom' the discharge orifice. The oil issues from the discharge tip under the influence of two forces; viz., the pressure tending to forcev the oil directly ti om the tip, and centrifugal force due to the' whirling motion. The atomization or breaking up of the liquid,

however, is due to the whirling motion, and

whereas there is little difficulty in obtaining the pressure necessary to force the oil through the discharge orifice, considerable care must be taken to maintain the'whirling effect at its maximum, thus insuring the maximum degree of atomization. Extreme fineness of the spray is essential in obtaining complete combustion and smokelessness in the combustion chamber. Atomizers which impart the whirling 'etf'ect to the liquid by means of helicalsc'rew threads and.

similar means, therefore, do not impart the maximum whirling motion to the liquid, and this can only be doneby imparting the whirling effect by means of a tangential ehannel delivering the liquid to the chain as tangential to the wall of chamber 11, I

desire to include in said term any degree of eccentricity of the channels which Wlll give to the'hquid a whirling 1noi.on.

In a companion application filed 20,

"10,09, bcrial No. 497,283, Ihave shown a -two-part sprayer having tangential passages delivering liquid to a chamber in'the tip. In the present case the claims are confined to a three-par t'device. v

\Vhat I claim and desire to secure by Letters Patent of the United States is 1. Ina spraying device in combination, a nozzle-having passages therein, a tip secured to said 'nozzle and having -a chamber and a discharge orifice, a removable member interposed between said nozzle and tip and having ducts therein in a plane at substaniiallyright-angles to the axis of the device and adapted ,to deliver liquid tangentially to said chamber, said ducts communicating with said passages.

2. In a spraying device in combinatio a nozzle having passages therein, a tip secured to said nozzle and having a chamber and a discharge orifice, a substantially flat removable member adapted to reston the face of the nozzle and to be clamped thereto by said tip, said member having a central opening and'ducts tangential to said opening and communicating with the nozzle passa es.

3. In a spraying device in combination, a nozzle having passages therein and an annular channel in its face, a tip sedurcd to said nozzle and having a chamber aiid a discharge orifice, and a removable member interposed between said nozzle and ti said member having acentral opening a apted to register with the chamber of the tip and also ducts connnunicating with the nozzle assa es and tan ential to said central opening.

4. In a spraying device in combination, a supply pipe, a nozzle having an internal means of attachment to said pipe, a tip having a. chamber and a discharge orifice and internal means of attachment to said nozzle said nozzle having an internal chamber an' passages leading therefrom, and a member intermediate said nozzle and tip having ducts communicating with said passages and leading eccentrically to said tip chamber.

5. In a spraying device, in combination, a nozzle having passages therein, a tip secured thereto having a chamber and a discharge orifice, a member adapted to rest on the face of the nozzle and to be clamped thereto by said tip, said member having ducts 001m municating with said passages and leading eccentrically to the tip chamber to impart to the issuing liquid a whirling motion by which it is atomized.

6; In a spraying device, in combination, a

nozzle, a tip secured to said nozzle, said tip having a chamber and a dischar e orifice, a

'member intermediate said nozz le and tip having eccentrically disposed channels or ducts leading to said chamber, a supply pipe to which sa d nozzle is-directly connected,

and means to deliver liquid to said channels or ducts. In testimony whereof, I have hereunto signed my name in the presence of two subscribing witnesses.

ERNEST H. PEABODV \Vitnesses:

FRANK E. RAFFMAN, Oscar Ascimn. 

